Langchain-Chatchat
Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowl…
What it does
Core capabilities at a glance
- Chatbot
- Chatchat
- Chatglm
- Chatgpt
- Embedding
- Faiss
- Fastchat
- GPT
Deep dive
The full breakdown - performance, comparisons, and setup
Langchain-Chatchat
Langchain-Chatchat is a vector database - Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain.
Overview
Langchain-Chatchat is open-source, written primarily in Python, with 38,139 GitHub stars under the Apache 2.0 license. The latest release is v0.3.1 (2024-07-12).
Key capabilities
From the project's documentation:
- 0.3.x 结构改变很大,强烈建议您按照文档重新部署. 以下指南不保证100%兼容和成功. 记得提前备份重要数据!
- 将 0.2.x 项目的 knowledge_base 目录拷贝到配置的 DATA 目录下
Install
A quick way to get started (always check the official docs for the latest):
pip install langchain-chatchat -UHow it fits a local-AI stack
Langchain-Chatchat runs on your own hardware, so pair it with a model and a GPU sized to your needs. Use the VRAM calculator to pick a model that fits your card, and see what you can run for hardware guidance. Related vector databases in the directory:
Sources
- Source code & docs: chatchat-space/Langchain-Chatchat
Stats from GitHub, 2026-06-08.
Frequently asked
Quick answers to common questions
What is Langchain-Chatchat?
Langchain-Chatchat is a vector-db tool for local AI workloads. Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowl…
Is Langchain-Chatchat free and open source?
Yes, Langchain-Chatchat has 38,139 GitHub stars and is licensed under Apache 2.0. You can self-host it for free on docker.
What platforms does Langchain-Chatchat support?
Langchain-Chatchat runs on docker.
What hardware do I need for Langchain-Chatchat?
The hardware requirements depend on which models you run. Check our hardware directory for compatible GPUs and systems. Langchain-Chatchat has 38,139 GitHub stars and an active community.
Does Langchain-Chatchat support GPU acceleration?
Langchain-Chatchat's GPU support depends on your specific setup. Check the documentation for details. For the best performance, pair it with an NVIDIA RTX 4090 or 5090.
What are the best alternatives to Langchain-Chatchat?
Popular alternatives include other vector-db tools in our directory. Browse our full collection at /tool for comparisons, community reviews, and benchmark data to find the right fit for your workflow.
How much does Langchain-Chatchat cost?
Langchain-Chatchat is free-open-source. It is completely free and open source to self-host.
Pairs well with
Complementary tools, models, and hardware
Comments coming soon
Configure NEXT_PUBLIC_GISCUS_REPO_ID and NEXT_PUBLIC_GISCUS_CATEGORY_ID at giscus.app to enable.